Add plan lineage CLI helpers

AGENTS.md

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+# Agent Instructions
+
+This file is bootstrap guidance only. Napseer is the canonical project memory source.
+
+## Operating Order
+
+For non-trivial work:
+
+1. Consult BotAI MCP for read-only advisory guidance.
+2. Query Napseer for current project memory.
+3. Inspect this repository or runtime before changing anything.
+4. Make the smallest scoped change that satisfies the task.
+5. Verify with focused proof.
+6. Record durable outcomes in Napseer when behavior, product direction, security, plans, or operations change.
+
+## Memory Source
+
+Use Napseer as the only project memory source. Do not create scattered Markdown files for internal project understanding. Repository Markdown is only for bootstrap instructions or intentional public/versioned documentation.
+
+Start with:
+
+- `/rules/memory-source-policy`
+- `/documentation/product/ideal-mcp-and-cli`
+- `/documentation/features/gateway-terminal`
+- `/indexes/project-memory-map`
+- `/documentation/product/prd`
+
+## Repository Scope
+
+This repository owns the operator-facing `nap` CLI, local MCP wrapper installation/update UX, project/auth/status commands, memory ergonomics helpers, and gateway command facade. Backend discovery remains the compatibility source of truth; authenticated project memory writes go through the local MCP wrapper.
+
+When CLI or MCP wrapper behavior changes, update the relevant Napseer node in the same work and verify with the focused CLI/MCP tests.